permanent-press
adjectiveUK /ˌpɜːmənənt ˈpres/
US /ˌpɜːrmənənt ˈpres/
Clothes that are permanent-press stay smooth and neat after washing without needing to be ironed.
My school uniform is permanent-press, so I never have to iron it.
OTHER MEANINGS
2. A fabric finish that keeps cloth from wrinkling.
The shirt has a permanent-press finish that keeps it looking crisp.
3. Describing a garment made with such a finish.
He packed two permanent-press shirts for the trip.
4. A setting on some washing machines for such fabrics.
Set the washer to permanent-press for these trousers.